TLView is a small application that provides you with a well organized and comprehensive view of the content of a type library.

The Component Object Model (COM) and ActiveX technologies use type libraries to provide COM-capable applications with the necessary information to use these objects. So a type library is sort of a blueprint of the functionality of an object. Note the type library does not contain the code executed by an object, it just contains a complete description of the interfaces an application can use to access the functionality exposed by the object. A type library can be an independent file (usually with the extension .TLB), but most frequently it is included as a resource in the object's Dynamic Link Library (DLL) or Executable (.EXE) file. Some type libraries are registered in your system's registry, but others must be loaded or extracted from the DLL or executable containing the COM/ActiveX server.

TLView lets you open type libraries that have been registered in your system's registry, that reside in your system as individual TLB files, or that have been embedded as a resource in DLLs or executable files.

Once you open a type library with TLView, you can then explore the objects contained in the library, their properties, methods, arguments, etc.

If you are using f90VB to create Fortran automation controllers, TLView will make your life much easier, by giving you a mean to quickly check the properties and methods of the automation objects your are using.

Follow the link to see a few screen shots of TLView in action.